So far this forum have been answering all my doubts to a point that i didnâ€™t need to post any new thread. But now i searched and still didnâ€™t found the answer to my somewhat technical question.
I backup some of my DVDâ€™s with CloneDVD and were surprised to find that the total size of the backup file was a little bigger than the original: sectors, size, time and last physical sector of data area as it was shown on ImgBurn. I checked with DVDShrink and saw that the movie, menus, extras, languages and subtitles had the same size in MB as the original, so apparently no problems there.
I was wondering from where that extra size comes. Itâ€™s not very much and â€“ whatâ€™s even stranger â€“ differs from DVD to DVD: with Crash i got an extra 144 sectors, 294912 plus in size and 2:00 in time and with double indemnity i got 192 extra sectors, 393216 plus in size and 2:42 in time.
I know that CloneDVD alters the â€œSource Media Application Identifier (to ELBY CLONEDVD) and Source Media Implementation Identifier (to ELABORATE BYTES) and was wondering if that as something to do with it.
When i use ImgBurn, unlike CloneDVD, i get a file that as the exact same size as the original.
In spite of the data (movie, extrasâ€¦) seems to occupy the same space in the backup iâ€™m a little afraid that iâ€™m not getting an exact copy of the original, wich my objective.
Important note: The backups in CloneDVD were made on SL media because it was enough for the 1:1 copy of the original DVD. For DL i always use ImgBurn.